Check engine light in freezing rain

I have a 2006 aveo, every time there's freezing rain, my check engine light comes on and will stay on for a few drives before it turns back off.
Is the freezing rain just a coincidence, or could it be what's causing the light to come on?
I haven't had the chance to pull codes from it because by the time I have a chance to scan it, the light is already off.


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We're going to need the code to narrow this down. :)

There's a lot of possible causes. It could be the plugs, coilpack, etc, so getting the code is the first step you should do.

Now it's been two months and moving into spring, maybe he does not have to suffer freezing rain... ;-)